Enzyme Quiz AP V1

2

Under which conditions is enzyme B most productive?

at 30' C and a pH of 9

at 45' C and a pH of 9

at 40'C and a pH of 5

at 45' C and a pH of 5

2

Which of the following is true?

Graph B represents an exergonic reaction that is non-spontaneous with a negative delta G

Graph B represents an endergonic reaction that is spontaneous with a negative delta G

Graph B represents an endergonic reaction, that is non-spontaneous with a positive delta G.

Graph B represents an exergonic reaction that is spontaneous with a negative delta g.

Graph B represents an exergonic reaction, that is non-spontaneous with a positive delta G

2

On BOTH graphs below, please draw in the enzyme-catalyzed versions of those reactions.

2

Which of the following are true about an enzyme-catalyzed reaction happening at Vmax?

product formation can be increased by adding enzyme

all available enzyme is actively engaged

product formation can be increased by adding substrate

all available substrate is actively engaged in the reaction

2

Which of the following is(are) true for catabolic reactions. There may be more than one answer.

They consume energy to build up polymers from monomers

They usually have a positive delta G

They are usually spontaneous

They release energy as they degrade polymers into monomers

They do not depend on enzymes

2

Which of the following is(are) true about enzyme catalyzed reactions?

The reaction rate is faster than the same reaction in the absence of the enzyme

The free energy change of the reaction is opposite from the reaction in the absence of the enzyme

The reaction always goes in the direction toward chemical equilibrium

A and B only

A, B and C

2

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?

competitive inhibition

saturation of the enzyme activity

denaturization of the enzyme

allosteric inhibition

2

The following graph is based on the reaction A + B --> C + D
Which of the following would be the same in an enzyme-catalyzed or noncatalyzed reaction?

2

Competitive inhibitors block the entry of substrate into the active site of an enzyme. On which of the following properties of an active site does this primarily depend?

the enzyme providing an appropriate microenvironment conducive to a reaction's occurrence

the enzyme's ability to stretch reactants and move them toward a transition state

the enzyme becoming too saturated because of the concentration of substrate

the enzyme forming covalent bonds with the reactants

the ability of an enzyme to form a template for holding and joining molecules

2

A series of enzymes catalyze the reaction X → Y → Z → A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme. The information above tells us that which of the following is true?

A is a competitive inhibitor

Y is both a substrate and a product

The presence and action of A will lower Vmax for the enzyme catalyzed metabolic reaction of X--> Y

The presence and action of A will result in a lower rate of reaction, but not affect Vmax, for the enzyme catalyzed metabolic reaction of X--> Y

X is a substrate

2

A group of AP Biology students is testing the effect of the amount of peroxidase enzyme on oxygen production. In cells, peroxidase breaks down hydrogen peroxide into water and oxygen gas. Identify an appropriate control group for this experiment.

the group with the same total volume, with water in place of catalyze enzyme.

the group in the highest temperature condition will serve as the control since it will slow the

most extreme effects of heat

the amount of peroxidase enzyme should be constant, making this the control group.

the amount of substrate is the control group since it will be kept the same to allow for a valid

experiment

2

The graph below shows the accumulation of product over time. Calculate the rate of enzyme-catalyzed reaction for the (3S) line on the graph. You must show all work in order to receive credit. You may use the writing tools or the text tools.

Enzyme Quiz AP V1

Under which conditions is enzyme B most productive?

Which of the following is true?

On BOTH graphs below, please draw in the enzyme-catalyzed versions of those reactions.

Which of the following are true about an enzyme-catalyzed reaction happening at Vmax?

Which of the following is(are) true for catabolic reactions. There may be more than one answer.

Which of the following is(are) true about enzyme catalyzed reactions?

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?

The following graph is based on the reaction A + B --> C + DWhich of the following would be the same in an enzyme-catalyzed or noncatalyzed reaction?

Competitive inhibitors block the entry of substrate into the active site of an enzyme. On which of the following properties of an active site does this primarily depend?

A series of enzymes catalyze the reaction X → Y → Z → A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme. The information above tells us that which of the following is true?

A group of AP Biology students is testing the effect of the amount of peroxidase enzyme on oxygen production. In cells, peroxidase breaks down hydrogen peroxide into water and oxygen gas. Identify an appropriate control group for this experiment.

The graph below shows the accumulation of product over time. Calculate the rate of enzyme-catalyzed reaction for the (3S) line on the graph. You must show all work in order to receive credit. You may use the writing tools or the text tools.

Under which conditions is enzyme B most productive?

Which of the following is true?

On BOTH graphs below, please draw in the enzyme-catalyzed versions of those reactions.

Which of the following are true about an enzyme-catalyzed reaction happening at Vmax?

Which of the following is(are) true for catabolic reactions. There may be more than one answer.

Which of the following is(are) true about enzyme catalyzed reactions?

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?

The following graph is based on the reaction A + B --> C + DWhich of the following would be the same in an enzyme-catalyzed or noncatalyzed reaction?

Competitive inhibitors block the entry of substrate into the active site of an enzyme. On which of the following properties of an active site does this primarily depend?

A series of enzymes catalyze the reaction X → Y → Z → A. Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme. The information above tells us that which of the following is true?

A group of AP Biology students is testing the effect of the amount of peroxidase enzyme on oxygen production. In cells, peroxidase breaks down hydrogen peroxide into water and oxygen gas. Identify an appropriate control group for this experiment.

The graph below shows the accumulation of product over time. Calculate the rate of enzyme-catalyzed reaction for the (3S) line on the graph. You must show all work in order to receive credit. You may use the writing tools or the text tools.

The following graph is based on the reaction A + B --> C + D
Which of the following would be the same in an enzyme-catalyzed or noncatalyzed reaction?

The following graph is based on the reaction A + B --> C + D
Which of the following would be the same in an enzyme-catalyzed or noncatalyzed reaction?